As per title suggested this is an attachment used on bicycle fork.
Using this attachment you can attach to your bicycle's fork either a light or a bicycle dynamo (front or rear & left or right)
When using it to attach a classic dynamo you can attach it anywhere you see it is best for you or your bicycle; meaning that using this attachent you can attach your dynamo either on the left or the right side, and either on front or rear wheel
Available on Silver or Black
Upon ordering you should inform us what color do you prefer. Otherwise we will send any of the two randomly.